A crew of construction workers build the framework for the Steam Plant at the Denver Ordnance Plant (Remington Ordnance Plant, later the Denver Federal Center) in Lakewood (Jefferson County), Colorado. Three boilers and pipe systems are enclosed in the structure. Rebar and gang forms are assembled and workers excavate the ground near the foundation. Workers wear hard hats, work clothes and tool belts. A crane sits next to the building and workers assemble wooden scaffolding with tools.